As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW REPORTED BURNING ODOR IN THE COCKPIT WHICH WOULD DISSIPATE AFTER A FEW MOMENTS. IT WAS NOTED THAT THE LEFT PITOT HEATER CIRCUIT BREAKER HAD TRIPPED. INVESTIGATION FOUND ONE TERMINAL ON THE SELECTOR SWITCH WAS LOOSE AND SHOWED SIGNS OF EXCESSIVE HEAT. SWITCH REPLACED.